Error exporting slideshow, need help

I am having Export issues : it’s been impossible to export, error exporting message at the beginning of the video rendering.
I never succeeded to export and have a presentation next Tuesday. Someone could help me ?
I have a 1920x1200 px slideshow, so used the personalized export. But it never worked, I am beginning to be anxious since I have only 3 days to find a solution.
Thanks for your help !

@Froggy33 Thank you for using FotoMagico. I’m sorry to hear about the troubles with exporting. Can you please send a screenshot of the error message and your export settings?